@onehitch
If by "terrible antenna" you mean the mag mount whip suppled with generic dvb-t dongles, it can be substantially improved very easily by following two steps:
(1) The magnetic base of whip provides a very tiny ground plane. Enlarge the ground plane by placing the whip over a large matallic surface like a can, plate or sheet. See photo 1 below.
(2) The whip is too long for 1090 Mhz. Cut the whip to make it 67 mm (1/4 wavelength). The 67 mm is made up of 15 mm metal inside base + 52 mm length above base. See photo 2 below.
Photo 1
Photo 2
If by "terrible antenna" you mean the mag mount whip suppled with generic dvb-t dongles, it can be substantially improved very easily by following two steps:
(1) The magnetic base of whip provides a very tiny ground plane. Enlarge the ground plane by placing the whip over a large matallic surface like a can, plate or sheet. See photo 1 below.
(2) The whip is too long for 1090 Mhz. Cut the whip to make it 67 mm (1/4 wavelength). The 67 mm is made up of 15 mm metal inside base + 52 mm length above base. See photo 2 below.
Photo 1
Photo 2
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